Thallium violations in Utah
11 active public water systems in Utah had a Thallium violation in the past three years. What Thallium is and why it matters.
Systems with a Thallium violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Roosevelt City Water System Duchesne County |
8,000 | 6 | 0 | |
|
Cedar Valley Water Conservancy Iron County |
3,995 | 6 | 0 | |
|
Jordanelle Ssd Wasatch County |
2,345 | 1 | 0 | |
|
Moroni City Sanpete County |
1,600 | 7 | 0 | |
|
Charleston Wcd Wasatch County |
484 | 8 | 0 | |
|
Wallsburg Town Water System Wasatch County |
440 | 6 | 0 | |
|
Oak Haven Water Company Wasatch County |
388 | 6 | 1 | |
|
American Pacific Iron County |
150 | 3 | 0 | |
|
Harmony Heights Water Company Washington County |
120 | 7 | 0 | |
|
North Valley Ranches Sub Washington County |
78 | 10 | 3 | |
|
Zion Red Rock Washington County |
61 | 4 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Thallium, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Thallium alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Utah records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.